document.write( "Question 153850: write an equation to solve this problem. the service pool built a pool that was 100ft by 60ft wide. they want to built a sidewalk around the pool and had 450ft of fence. what is the maximum width that the sidewalk can be? \n" ); document.write( "
Algebra.Com's Answer #113289 by checkley77(12844)\"\" \"About 
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2*100+2*60=200+120=320 is the perimeter of the pool.
\n" ); document.write( "2(100+2x)+2(60+2x)=450 this is the perimeter of the pool plus the sidewalk.
\n" ); document.write( "200+4x+120+4x=450
\n" ); document.write( "8x+320=450
\n" ); document.write( "8x=450-320
\n" ); document.write( "8x=130
\n" ); document.write( "x=130/8
\n" ); document.write( "x=16.25 ft is the width of the sidewalk.
\n" ); document.write( "proof:
\n" ); document.write( "2(100+32.5)+2(60+32.5)=450
\n" ); document.write( "2*132.5+2*92.5=450
\n" ); document.write( "265+185=450
\n" ); document.write( "450=450
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